Diglycolamide functionalized multi-walled carbon nanotubes for removal of uranium from aqueous solution by adsorption

The synthesis and characterization of tributyl phosphate grafted carbon nanotubes by the floating catalytic chemical vapor deposition method and their sorption behavior towards uranium

“…A comparison of the prepared adsorbents with other functionalized CNTs reported in the literature is given in Table 6. For example, the capacity obtained for CNT-TBP is higher than plain oxidized MWCNTs 28 (43.30 mg g À1 ), diglycolamide functionalized MWCNTs 34 (133.7 mg g À1 ), carboxymethyl cellulose grafted CNTs 35 (112.0 mg g À1 ), imine functionalized carbon spheres 36 (113 mg g À1 ) and palm shell activated carbon 37 (51.81 mg g À1 ). A comparison of the adsorption capacities of various functionalized CNTs is given in Table 6.…”

Adsorption of Eu3+and Am3+ion towards hard donor-based diglycolamic acid-functionalised carbon nanotubes: density functional theory guided experimental verification

“…[37] Approximately 25 mg of CNT -DGA was equilibrated for 2 h with aqueous solution spiked with 241 Am (III) (or (152þ154) Eu (III)) tracer at pH 2 …”

“…To the best of our knowledge, no effort has been put forward either from experiment or theory for the study of complexation of DGA-functionalised-CNT for the selective removal of Eu 3þ ion over Am 3þ ion. Recently, Singha Deb et al [37,38] have indigenously synthesised the CNT -DGA molecules and tested for their adsorption of UO 2 2þ and Th 4þ metal ions from aqueous solution. Therefore, it is of great interest to test the potentiality of this CNT -DGA for the separation of Eu 3þ ion from Am 3þ ion.…”

The removal of uranium(VI) from aqueous solution by graphene oxide–carbon nanotubes hybrid aerogels

“…So far, sorption has been considered to be one of the most effective methods for the separation of uranium(VI) from radioactive wastewater because it is highefficient and easily handling [2]. Recent studies show that nanomaterials, especially carbon-based nanocomposites, exhibit better sorption performance in comparison with non-nanomaterials [3][4][5][6][7][8][9][10][11]. However, the high dispersibility of nanomaterials in aqueous solutions makes it difficult to separate sorbents from aqueous phase after sorption, which restricts the real application in large volumes of waters [12][13][14].…”